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