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