One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,12)(4,8)(5,10)(6,11)(7,15)(9,14)(13,16)(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(1,3,6,4)(2,8,11,12)(5,14,7,13)(9,10,16,15)(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)(1,4,6,3)(2,9,11,16)(5,14,7,13)(8,10,12,15)(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)(1,5,6,7)(2,10,11,15)(3,13,4,14)(8,9,12,16)(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.