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)(19,29)(20,34)(21,26)(22,38)(23,39)(24,31)(25,28)(27,35)(30,44)(32,45)(33,42)(36,37)(40,43)(41,47)(46,48) involution — undirected(1,3,5,11)(2,6,8,9)(4,12,13,10)(7,15,16,14)(17,19,21,31)(18,24,26,29)(20,30,27,41)(22,32,37,46)(23,33,25,40)(28,42,39,43)(34,47,35,44)(36,45,38,48)(17,20,35,26,23,36,37,39,21,27,34,18,25,38,22,28)(19,30,44,29,33,45,46,43,31,41,47,24,40,48,32,42)(1,4,5,13)(2,7,8,16)(3,10,11,12)(6,14,9,15)(19,31)(24,29)(30,41)(32,46)(33,40)(42,43)(44,47)(45,48)(2,8)(6,9)(7,16)(14,15)(18,26)(19,31)(20,27)(28,39)(32,46)(33,40)(36,38)(44,47) 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.