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