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