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