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