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