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