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