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