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