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