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