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