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)(19,28)(20,25)(21,31)(22,32)(23,27)(24,30)(26,29)(33,34)(35,40)(36,37)(38,43)(39,42)(41,48)(44,47)(45,46) involution — undirected(1,2)(3,7)(4,8)(5,9)(6,11)(10,14)(12,15)(13,16)(17,19)(18,24)(20,22)(21,29)(23,30)(25,26)(27,28)(31,32)(33,35,39,38)(34,40,42,43)(36,46,41,44)(37,45,48,47)(1,3)(2,6)(4,10)(5,11)(7,9)(8,13)(12,16)(14,15)(17,20,23,21)(18,25,27,31)(19,22,30,29)(24,26,28,32)(33,34,39,42)(35,43,38,40)(36,37,41,48)(44,45,46,47)(1,3)(2,7)(4,10)(5,11)(6,9)(8,14)(12,16)(13,15)(17,21,23,20)(18,25,27,31)(19,29,30,22)(24,26,28,32)(33,36)(34,37)(35,44)(38,46)(39,41)(40,47)(42,48)(43,45)(1,2)(3,6)(4,8)(5,9)(7,11)(10,13)(12,15)(14,16)(17,18)(19,24)(20,25)(21,31)(22,26)(23,27)(28,30)(29,32)(33,37)(34,41)(35,45)(36,42)(38,47)(39,48)(40,44)(43,46) involution — undirected(1,4)(2,8)(3,10)(5,12)(6,13)(7,14)(9,15)(11,16)(17,22,23,29)(18,26,27,32)(19,20,30,21)(24,25,28,31)(33,38,39,35)(34,40,42,43)(36,46,41,44)(37,47,48,45)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.