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