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