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