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