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