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