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