One vertex per element, one color per generator, with an edge from x to x·s.
(4,12)(8,15)(10,16)(13,14)(17,18,23,21)(19,26,25,22)(20,28,30,24)(27,29,31,32)(33,34)(35,43)(36,46)(37,48)(38,44)(39,42)(40,45)(41,47)(1,2)(3,7)(4,8)(5,9)(6,11)(10,14)(12,15)(13,16)(17,19)(18,22)(20,27)(21,26)(23,25)(24,29)(28,32)(30,31)(33,35)(34,40)(36,44)(37,47)(38,41)(39,45)(42,43)(46,48) involution — undirected(1,3)(2,6)(4,10)(5,11)(7,9)(8,13)(12,16)(14,15)(17,18,23,21)(19,22,25,26)(20,24,30,28)(27,29,31,32)(33,36,39,47)(34,41,42,46)(35,44,45,37)(38,43,48,40)(1,3)(2,7)(4,10)(5,11)(6,9)(8,14)(12,16)(13,15)(17,20)(18,24)(19,27)(21,28)(22,29)(23,30)(25,31)(26,32)(33,37)(34,38)(35,36)(39,44)(40,46)(41,43)(42,48)(45,47) involution — undirected(1,2)(3,6)(4,8)(5,9)(7,11)(10,13)(12,15)(14,16)(17,21,23,18)(19,26,25,22)(20,24,30,28)(27,29,31,32)(33,35)(34,40)(36,44)(37,47)(38,41)(39,45)(42,43)(46,48)(1,4)(2,8)(3,10)(5,12)(6,13)(7,14)(9,15)(11,16)(17,22,23,26)(18,25,21,19)(20,29,30,32)(24,31,28,27)(33,38)(34,37)(35,41)(36,43)(39,48)(40,47)(42,44)(45,46)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.