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