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