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