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