One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,9)(8,13)(14,15)(17,18)(19,27)(20,22)(21,24)(23,25)(26,31)(28,29)(30,32)(33,34,39,41)(35,40,43,37)(36,42,46,48)(38,44,45,47)(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,19,23,21)(18,24,25,27)(20,30,31,28)(22,29,26,32)(33,35,39,43)(34,40,41,37)(36,45,46,38)(42,47,48,44)(4,12)(8,13)(10,16)(14,15)(18,25)(22,26)(24,27)(29,32)(34,41)(35,43)(38,45)(42,48) involution — undirected(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,20)(18,26)(19,28)(21,30)(22,25)(23,31)(24,29)(27,32)(33,36)(34,42)(35,38)(37,47)(39,46)(40,44)(41,48)(43,45) involution — undirected(1,3)(2,7)(4,10)(5,11)(6,9)(8,14)(12,16)(13,15)(17,21,23,19)(18,27,25,24)(20,28,31,30)(22,32,26,29)(33,37,39,40)(34,43,41,35)(36,44,46,47)(38,48,45,42)(1,4)(2,8)(3,10)(5,12)(6,13)(7,14)(9,15)(11,16)(17,22,23,26)(18,20,25,31)(19,29,21,32)(24,30,27,28)(33,38)(34,44)(35,36)(37,48)(39,45)(40,42)(41,47)(43,46)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.