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