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