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