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