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