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