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