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