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