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