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