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