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