One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,8,5,7,13,15)(3,9,10,14,11,16,12,6)(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)(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)(1,3,5,11)(2,6,7,14)(4,12,13,10)(8,16,15,9)(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)(2,7)(6,14)(8,15)(9,16)(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.